A Grammatical Dictionary of Botanical Latin

Aculeus,-i (s.m. II), abl.sg. aculeo: spine, prickle (q.v.), “a prickle; conical elevation of the skin of a plant, becoming hard and sharp-pointed” (Lindley); a sharp epidermal emergence; in microscopic or semi-microscopic organs or organisms, such as spores or liverworts, an aculeus may refer to a single, radially symmetrical, broad-based to narrowly acute apex structure upon the cell of a thallus, leaf or spore surface [> L. aculeus,-i (s.m.II), dim. from acus ‘with the gender changed’ (Liddell & Scott), a sting, a spine or prickle]; see prickle, thorn;

- herba aculeis acicularibus 1.7–3.5 mm longibus sparse armata, herb with prickles acicular 1.7-3.5 mm long sparsely armed.

- caudex inermis v. aculeis saepius nigris compressis armatus, trunk unarmed or more frequently armed with black, compressed spines.

- caules aculeis parvis rectis disperses, stems with prickles small, straight, scattered.

- aculei albi, denmm sordide spadicei, the aculei white.

- aculei regulares, formosi, pulcherrime coeruleo - violacei ; quibus obtectus paene stipes curtus, crassus, in pileum transfluens, aculei regular, finely formed, very beautifully sky-blue-violet; with which the short, thick stipe is almost overwhelmed, running through into the pileus.

- herbae pilis vel aculeis urentibus saepius crebris armatae, herbs fortified with stinging hairs or prickles more often numerous.

- (Annona muricata] bacca magna, difformis, cordato-oblonga, corticola, aculéis recurvis muricata (Swartz), the berry large, irregularly formed, cordate-oblong, on the bark, muricate with recurved spines.

aculeus-bearing: aculifer,-fera,-ferum (adj.A); aculiferus,-a,-um (adj.A); aculiger,-gera,-gerum (adj.A).

Rubus aculiferus